Aug 10 – 15, 2015
Centro Brasileiro de Pesquisas Físicas
Brazil/East timezone

MeV gauge boson and secret interaction of sterile neutrinos

Not scheduled
Ministro João Alberto Lins de Barros auditorium (Centro Brasileiro de Pesquisas Físicas)

Ministro João Alberto Lins de Barros auditorium

Centro Brasileiro de Pesquisas Físicas

Rua Dr. Xavier Sigaud 150 Urca - Rio de Janeiro - RJ BRAZIL
Poster Working group 1: Neutrino Oscillation Physics


Prof. Orlando Luis Goulart Peres (UNICAMP)


Recent results from the neutrino experiments show evidence for light sterile neutrinos which do not have any SM interactions. These light sterile states are disfavored by cosmology due to the constraints from onthe Big Bang nucleosynthesis and the Large Scale Structure Formation. This tension could be solved if the sterile neutrino states could have interaction with a light gauge boson X with mass $M_X$ (the secret interaction model) with a field strength at least 100-1000 times beggar than the Fermi constant. We show in this paper that such large interaction strength is disfavored from MINOS experiment and we can constrain the mass of the light gauge boson. A tiny region was found compatible with anomalous g-2 results, constrains from cosmology and MINOS data with M_X\sim 10-100 MeV and $g_x \sim 10^{-3}-10^{-4}.$


We work the implications of secret interactions of sterile neutrinos with light gauge boson in neutrino phenomenology and we have found a curious common region for constrains from cosmology, MINOS data and g-2 anomalous results.

Primary author

Dr Zahra Tabrizi (IPM and UNICAMP)


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